The Color Key node is used to key out a specified color in a connected texture map. In figure 2, the Color Key node is used to key out the red color on a connected texture map.


Color Key

Figure 1: Color correction Node


Color Key

Figure 2: A Color Key node example


Color Key Parameters

Input Image - Image to be keyed.

Key Color - The color to be keyed.

Mask - Garbage matte should be connected here.

Fill Color - The color to replace the keyed area.

Low/High Cutoff - The low and high cutoff for the color difference.

Computation Gamma - Adjusts the color range mid-tones before computing the difference.

Projection - Specifies the projection type to be used for this texture.

U Cutoff Low/High - Specifies the low and high edge of simple 2D cutoff in the U direction.

V Cutoff Low/High - Specifies the low and high edge of simple 2D cutoff in the V direction.